-47.94% is the change from 315 to 164
Calculation steps:
[( 164 - 315 ) ÷ 315] x 100 = -47.94%
Formula
Percentage change = [(164 - 315) / 315] x 100
Subtract the new number by the original number
164 - 315 = -151
-151 ÷ 315 = -0.4793650793650794
-0.4793650793650794 x 100 = -47.94%